Hydrated lime (or calcium hydroxide, or slaked lime) is usually a dry powder resulting from the controlled slaking of quicklime with water. The exothermic or released heat of reaction is captured and used to evaporate the excess slaking water.
Our Hydrated Lime is famous for its purity and high whiteness quality. Our natural calcium carbonate produces no toxic and harmful effect. We are widely well reckoned as one of the superior Calcium Carbonate Exporters We supply high quality Hydrated LimeCa(OH)2, which is also known as slaked lime, slack lime and pickling lime. It is a colorless crystal or white powder which is obtained when calcium oxide is mixed or slaked with water. Further, it can also be precipitated by mixing an aqueous solution of calcium chloride with an aqueous solution of sodium hydroxide.
Municipal Wastewater Treatment: In advanced wastewater treatment plants, lime precipitation is used in tertiary processes in which phosphorus is precipitated as complex calcium phosphates along with other suspended and dissolved solids.
Industrial Wastewater: In treating Industrial Wastewaters, lime has many applications. This is widely used where neutralization of acidic wastes is required. In steel plants, sulfuric acid-based waste pickle liquors are neutralized with lime in which the iron salts are precipitated.
IS 1540 (part 2): 1990
Table 1 Requirement for Hydrated lime for chemical industries
|SI no||Characteristic||Requirement||Method of Test, (Ref to C1. No. in)|
|Grade A||Grade B||Grade C||IS 1540 |
(Part I): 1980*
|IS 1514 : 1990|
|-1 ||-2 ||-3 ||-4 ||-5 ||-6 ||-7 |
|I)||Moisture , percent by mass||0.5 to 0.8||0.5 to 0.8||--- ||18 |
|II)||Available lime [as Ca (OH)2]*, percent by mass, Min||90 ||86 ||---||9 |
|-4||Acid insoluble matter (as SiO2), percent by mass, Max||1 ||1.5 ||---||10 |
|-5 ||Iron (as Fe2O3), percent by mass, Max||--- ||0.3 ||---||11 |
|-6 ||Alumina (as Al2O3), percent by mass, Max||--- ||0.3 ||---||11 |
|-7 ||Magnesia (as MgO), percent by mass, Max||1.5 ||1 ||---||13 |
|-8 ||Dead burnt lime (as CaO), percent by mass, Max||--- ||2 ||---||15 |
|-9 ||Carbon dioxide, percent by mass ,Max||1 ||2.5 ||A-2||--- |
|-10 ||Manganese (as Mn2O3), percent by mass , Max||--- ||0.03||0.03 ||A-5||--- |
|*To convert the available lime content from CaO to Ca(OH)2 multiply the result by 1.32.|